A function handle is a MATLAB® data type that represents a function. A typical use of function handles is to pass a function to another function. For example, you can use function handles as input arguments to functions that evaluate mathematical expressions over a range of values.
Function handles can represent either named or anonymous functions. To
create a function handle, use the @ operator. For
example, create a handle to an anonymous function that evaluates the
expression x2 –
y2:
f = @(x,y) (x.^2 - y.^2);
function_handle | Handle to function |
feval | Evaluate function |
func2str | Construct character vector from function handle |
str2func | Construct function handle from character vector |
localfunctions | Function handles to all local functions in MATLAB file |
functions | Information about function handle |
Use a function handle to create an association to a named function or an anonymous function. Then, you can indirectly call the representative function.
Pass Function to Another Function
You can use function handles as input arguments to
functions that evaluate mathematical expressions over a range of values,
such as integral and fzero.
This topic explains how to store or access extra parameters
for mathematical functions that you pass to functions such as fzero, ode45,
or integral.
Call Local Functions Using Function Handles
If a function returns handles to local functions, you can call the local functions outside of the main function. This approach allows you to have multiple, callable functions in a single file.
The result of comparing equality of function handles depends on what the handle represents and when you created it.